Update app.py

app.py

@@ -85,7 +85,7 @@ def respond(message, history):
    messages = [{
     "role": "system", 
     "content": "You are a big sister chatbot named Nessie. You help people feel better in a simple manner. Always reply in 3 sentences or less. Do not stop mid-sentence."
-}]
+    }]
     # change the personality
     context = get_top_chunks(message)